1 /* 2 * Copyright 2012 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * based on nouveau_prime.c 23 * 24 * Authors: Alex Deucher 25 */ 26 #include <drm/drmP.h> 27 28 #include "radeon.h" 29 #include <drm/radeon_drm.h> 30 31 struct sg_table *radeon_gem_prime_get_sg_table(struct drm_gem_object *obj) 32 { 33 struct radeon_bo *bo = gem_to_radeon_bo(obj); 34 int npages = bo->tbo.num_pages; 35 36 return drm_prime_pages_to_sg(bo->tbo.ttm->pages, npages); 37 } 38 39 void *radeon_gem_prime_vmap(struct drm_gem_object *obj) 40 { 41 struct radeon_bo *bo = gem_to_radeon_bo(obj); 42 int ret; 43 44 ret = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, 45 &bo->dma_buf_vmap); 46 if (ret) 47 return ERR_PTR(ret); 48 49 return bo->dma_buf_vmap.virtual; 50 } 51 52 void radeon_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr) 53 { 54 struct radeon_bo *bo = gem_to_radeon_bo(obj); 55 56 ttm_bo_kunmap(&bo->dma_buf_vmap); 57 } 58 59 struct drm_gem_object *radeon_gem_prime_import_sg_table(struct drm_device *dev, 60 size_t size, 61 struct sg_table *sg) 62 { 63 struct radeon_device *rdev = dev->dev_private; 64 struct radeon_bo *bo; 65 int ret; 66 67 ret = radeon_bo_create(rdev, size, PAGE_SIZE, false, 68 RADEON_GEM_DOMAIN_GTT, 0, sg, &bo); 69 if (ret) 70 return ERR_PTR(ret); 71 72 mutex_lock(&rdev->gem.mutex); 73 list_add_tail(&bo->list, &rdev->gem.objects); 74 mutex_unlock(&rdev->gem.mutex); 75 76 return &bo->gem_base; 77 } 78 79 int radeon_gem_prime_pin(struct drm_gem_object *obj) 80 { 81 struct radeon_bo *bo = gem_to_radeon_bo(obj); 82 int ret = 0; 83 84 ret = radeon_bo_reserve(bo, false); 85 if (unlikely(ret != 0)) 86 return ret; 87 88 /* pin buffer into GTT */ 89 ret = radeon_bo_pin(bo, RADEON_GEM_DOMAIN_GTT, NULL); 90 radeon_bo_unreserve(bo); 91 return ret; 92 } 93 94 void radeon_gem_prime_unpin(struct drm_gem_object *obj) 95 { 96 struct radeon_bo *bo = gem_to_radeon_bo(obj); 97 int ret = 0; 98 99 ret = radeon_bo_reserve(bo, false); 100 if (unlikely(ret != 0)) 101 return; 102 103 radeon_bo_unpin(bo); 104 radeon_bo_unreserve(bo); 105 } 106